Zonneschijn — 2025
| Month | Leiden | Zoeterwoude | Difference |
|---|---|---|---|
| Jan | 102.8 uren | – | – |
| Feb | 149.8 uren | – | – |
| Mar | 311.5 uren | – | – |
| Apr | 326.4 uren | – | – |
| May | 389.6 uren | – | – |
| Jun | 415.5 uren | – | – |
| Jul | 413 uren | – | – |
| Aug | 356.9 uren | – | – |
| Sep |
| 283.7 uren |
| – |
| – |
| Oct | 172.1 uren | – | – |
| Nov | 131.4 uren | – | – |
| Dec | 103.2 uren | – | – |